US4464614A - Numerical control unit - Google Patents

Numerical control unit Download PDF

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Publication number
US4464614A
US4464614A US06/361,921 US36192182A US4464614A US 4464614 A US4464614 A US 4464614A US 36192182 A US36192182 A US 36192182A US 4464614 A US4464614 A US 4464614A
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US
United States
Prior art keywords
analog
feed speed
numerical control
control unit
digital converter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/361,921
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English (en)
Inventor
Mitsuo Kurakake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
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Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Assigned to FUJITSU FANUC LIMITED, 5-1 ASAHIGAOKA 3-CHOME, HINO-SHI, TOKYO 191, JAPAN A CORP. OF JAPAN reassignment FUJITSU FANUC LIMITED, 5-1 ASAHIGAOKA 3-CHOME, HINO-SHI, TOKYO 191, JAPAN A CORP. OF JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KURAKAKE, MITSUO
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Publication of US4464614A publication Critical patent/US4464614A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
    • G05B19/416—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by control of velocity, acceleration or deceleration
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34241—For reading data only

Definitions

  • the present invention relates to a numerical control unit which adopts what is called an F1-digit feed command system, which is capable of driving a motor at a feed speed designated by a feed speed-designation dial on an NC control panel.
  • the F1-digit feed command system permits the operator to carry out actual machining while controlling the feed speed for each process by turning a feed speed-designation dial on a control panel installed on the side of an NC cabinet or a machine, and this is one of the feed speed command systems suitable for use when machining dies or the like if the optimum cutting speed is unknown before actual machining is started.
  • a voltage-controlled variable frequency oscillator is driven by a DC voltage proportional to the amount that a knob of the feed speed-designation dial is turned to generate a signal of a frequency proportional to the amount of the rotational movement of the knob, and the frequency is counted by a main processor section and then the motor is driven at a feed speed proportional to the results of the counting.
  • the prior art unit thus includes an analog oscillation circuit, and hence it has the defects that it has to be adjusted at many places and is complicated in circuit construction because of the necessity for reducing variations in the oscillation frequency.
  • the present invention offers a solution to such defects of the prior art and has for its object to provide a numerical control unit which achieves the F1-digit feed command system with a simple circuit structure.
  • FIGS. 1 and 2 are explanatory of the arrangement of an embodiment of the present invention
  • FIG. 1 being a plan view of a control panel on which feed speed-designation dials are mounted and
  • FIG. 2 being a block diagram showing the principal part of an electric circuit section of the F1-digit feed command system.
  • FIGS. 1 and 2 are explanatory of an embodiment of the present invention, FIG. 1 being a plan view of a control panel on which feed speed-designation dials are mounted and FIG. 2 being a block diagram showing the principal part of an electric circuit section of the F1-digit feed command system.
  • reference numeral 10 indicates a control panel; and F1 to F7 designate feed speed-designation dials, which are respectively provided with graduations indicating feed speeds, for instance, from 5 mm/minute to 1200 mm/minute, and which are adapted for use by setting knobs d1 to d7 to desired graduations.
  • reference characters f1 to f7 identify potentiometers, each of which yields a DC voltage proportional to the amount the knob of one of the feed speed-designation dials F1 to F7 is turned.
  • the potentiometers are each made up of a resistor R supplied, for example, with such a predetermined voltage Vcc as shown and a brush B sliding on the resistor R in gauged relation to the corresponding one of the knobs d1 to d7.
  • Reference character SW denotes a selection switch, which selects the potentiometer output corresponding to the feed speed-designation dial designated, via an interpreted signal cord, in a machining program. Incidentally, such an arrangement has heretofore been well known.
  • an AD converter 20 is provided and the output from the selection switch SW is applied to the AD converter 20, by which the DC voltage output from each of the potentiometers f1 to f7 is converted into a digital quantity.
  • the digital quantity is read out by a main processor section CPU which performs data processing for numerical control, and a motor is driven at a feed speed proportional to the digital quantity.
  • reference character BUS indicates a main bus; 21 designates axis control circuits; and 22 identifies an F1-digit unit.
  • the AD converter is provided for converting the DC voltage output from each potentiometer and the AD converter output is read out by the main processor section; therefore, the circuit construction is markedly simplified as compared with the conventional one employing a voltage-controlled variable oscillator.
  • the AD converting section including the selection switch SW in FIG. 2 could be formed on one chip, permitting further simplification and economization of the circuit structure.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)
  • Control Of Electric Motors In General (AREA)
US06/361,921 1980-07-17 1981-07-16 Numerical control unit Expired - Fee Related US4464614A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9777480A JPS5723113A (en) 1980-07-17 1980-07-17 Numerical controller
JP55-97774 1980-07-17

Publications (1)

Publication Number Publication Date
US4464614A true US4464614A (en) 1984-08-07

Family

ID=14201181

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/361,921 Expired - Fee Related US4464614A (en) 1980-07-17 1981-07-16 Numerical control unit

Country Status (4)

Country Link
US (1) US4464614A (de)
EP (1) EP0055785A4 (de)
JP (1) JPS5723113A (de)
WO (1) WO1982000371A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570112A (en) * 1982-11-24 1986-02-11 Usm Corporation Control circuit for numerically controlled motor
US4580086A (en) * 1983-03-15 1986-04-01 Rengo Co., Ltd. Method for positioning tools
US4738368A (en) * 1983-07-11 1988-04-19 Bell & Howell Company Elevator mechanism for the code reader of a mail sorting machine
US11163287B2 (en) * 2016-09-14 2021-11-02 Keba Ag Control device for operating a machine tool, in particular a milling machine or lathe, and corresponding machine tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207068C2 (de) * 1982-02-26 1994-02-24 Kaltenbach & Voigt Schaltungsanordnung zur Steuerung der Bewegung einer Einstellvorrichtung, insbesondere eines Patientenstuhles
JPH0612112B2 (ja) * 1984-03-31 1994-02-16 三井造船株式会社 液噴霧式ガス圧縮方法
US4999927A (en) * 1988-05-13 1991-03-19 Hoechst Aktiengesellschaft Process and device for drying a liquid layer applied to a moving carrier material
DE3927627A1 (de) * 1989-08-22 1991-02-28 Hoechst Ag Verfahren und vorrichtung zum trocknen einer auf einem bewegten traegermaterial aufgebrachten fluessigkeitsschicht

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418547A (en) * 1965-03-22 1968-12-24 Gen Signal Corp Step-servocontroller
US3962620A (en) * 1974-06-03 1976-06-08 The Arthur G. Russell Company, Incorporated Switching apparatus
US4047818A (en) * 1974-10-14 1977-09-13 C. Reichert Optische Werke, Ag Filter regulator for microspectrophotometer
US4132941A (en) * 1977-03-16 1979-01-02 Koehring Company Syncro-matic circuit used with material spreaders
US4263539A (en) * 1977-10-04 1981-04-21 Zenith Radio Corporation Automatic antenna positioning apparatus
US4358721A (en) * 1980-05-20 1982-11-09 Abex Corporation Bridge positioning device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4427040Y1 (de) * 1966-07-01 1969-11-12
JPS488066B1 (de) * 1969-03-31 1973-03-10
JPS4932079A (de) * 1972-07-25 1974-03-23
US4205308A (en) * 1977-11-21 1980-05-27 Fmc Corporation Programmable alarm system for marine loading arms

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418547A (en) * 1965-03-22 1968-12-24 Gen Signal Corp Step-servocontroller
US3962620A (en) * 1974-06-03 1976-06-08 The Arthur G. Russell Company, Incorporated Switching apparatus
US4047818A (en) * 1974-10-14 1977-09-13 C. Reichert Optische Werke, Ag Filter regulator for microspectrophotometer
US4132941A (en) * 1977-03-16 1979-01-02 Koehring Company Syncro-matic circuit used with material spreaders
US4263539A (en) * 1977-10-04 1981-04-21 Zenith Radio Corporation Automatic antenna positioning apparatus
US4358721A (en) * 1980-05-20 1982-11-09 Abex Corporation Bridge positioning device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570112A (en) * 1982-11-24 1986-02-11 Usm Corporation Control circuit for numerically controlled motor
US4580086A (en) * 1983-03-15 1986-04-01 Rengo Co., Ltd. Method for positioning tools
US4738368A (en) * 1983-07-11 1988-04-19 Bell & Howell Company Elevator mechanism for the code reader of a mail sorting machine
US11163287B2 (en) * 2016-09-14 2021-11-02 Keba Ag Control device for operating a machine tool, in particular a milling machine or lathe, and corresponding machine tool

Also Published As

Publication number Publication date
WO1982000371A1 (en) 1982-02-04
JPS5723113A (en) 1982-02-06
EP0055785A4 (de) 1984-09-05
EP0055785A1 (de) 1982-07-14

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Legal Events

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AS Assignment

Owner name: FUJITSU FANUC LIMITED, 5-1 ASAHIGAOKA 3-CHOME, HIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KURAKAKE, MITSUO;REEL/FRAME:004006/0823

Effective date: 19820309

Owner name: FUJITSU FANUC LIMITED, 5-1 ASAHIGAOKA 3-CHOME, HIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KURAKAKE, MITSUO;REEL/FRAME:004006/0823

Effective date: 19820309

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Year of fee payment: 4

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FP Expired due to failure to pay maintenance fee

Effective date: 19920809

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362